Today’s Sun – September 4, 2017

A view in white light of today’s sun showing the two huge active regions AR12674 and AR12673. Image composite of the north and south regions merged to create this whole sun view, artificial color added to the view.

Tech Specs: Canon EF 400mm f/5.6L USM + Canon 2x Extender III + ZWO ASI290MC camera piggyback mounted on a Meade 12” LX90 telescope on a Celestron CGEM-DX mount. Best 50% of 5000 frames collected using SharpCap v3.0 and AutoStakkert! V3.0.14 (x64). A 77mm Thousand Oaks Optical Solar Filter was on the business end of the lens. Date: September 4, 2017.

…Tom


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